Kamaki M, Kawamura M, Moriya H, Hirayama K
Department of Neuropsychiatry, Tokyo Metropolitan Hiroo General Hospital, Japan.
J Neurol Neurosurg Psychiatry. 1993 Sep;56(9):1027-32. doi: 10.1136/jnnp.56.9.1027.
"Crossed homonymous hemianopia" and "crossed left hemispatial neglect" were observed in a woman with Marchiafava-Bignami disease. Two forms of "crossed homonymous hemianopia" were observed. Initially, Goldmann perimeter testing showed a left homonymous hemianopia with the right hand and vice versa. Later, confrontation tests showed a left homonymous hemianopia, whereas visual field testing using the Goldmann perimeter (kinetic quantitative perimeter) and the OCTOPUS (Interzeag AG, static automated perimeter) showed a right homonymous hemianopia with either hand. "Crossed left hemispatial neglect" was not seen with the left hand, but neglect of the left hemifield was seen with the right hand. CT and MRI showed a lesion occupying almost the entire corpus callosum. PET showed no significant differences between comparable areas of the left and right cerebral hemispheres. These findings indicate that both signs of interhemispheric disconnection were due to the callosal lesion. Moreover, the "crossed left hemispatial neglect" can be explained as being a consequence of the dominance of the right cerebral hemisphere for visuospatial recognition.
在一名患有马奇亚法瓦-比尼亚米病的女性中观察到了“交叉性同侧偏盲”和“交叉性左侧半空间忽视”。观察到了两种形式的“交叉性同侧偏盲”。最初，戈德曼视野计测试显示右手存在左侧同侧偏盲，反之亦然。后来，面对面测试显示为左侧同侧偏盲，而使用戈德曼视野计（动态定量视野计）和章鱼视野计（Interzeag AG，静态自动视野计）进行的视野测试显示，无论用哪只手测试均为右侧同侧偏盲。“交叉性左侧半空间忽视”在用左手时未出现，但用右手时出现了左侧半视野忽视。CT和MRI显示病变几乎占据了整个胼胝体。PET显示左右大脑半球的可比区域之间无显著差异。这些发现表明，半球间分离的两种体征均归因于胼胝体病变。此外，“交叉性左侧半空间忽视”可以解释为是右侧大脑半球在视觉空间识别方面占主导地位的结果。
